Fix PostgreSQL migration for ban DB refactor (#42609)

This didn't come up in testing. The ban hit foreign key was added before the data was migrated, so it didn't work.

Fix that.

Content.Server.Database/Migrations/Postgres/20260120200503_BanRefactor.cs

@@ -240,14 +240,6 @@ namespace Content.Server.Database.Migrations.Postgres
                 column: "ban_id",
                 unique: true);
 
-            migrationBuilder.AddForeignKey(
-                name: "FK_server_ban_hit_ban_ban_id",
-                table: "server_ban_hit",
-                column: "ban_id",
-                principalTable: "ban",
-                principalColumn: "ban_id",
-                onDelete: ReferentialAction.Cascade);
-
             migrationBuilder.Sql("""
                 CREATE INDEX "IX_ban_address_address"
                     ON ban_address
@@ -490,6 +482,14 @@ namespace Content.Server.Database.Migrations.Postgres
                 	AND round_id IS NOT NULL;
                 """);
 
+            migrationBuilder.AddForeignKey(
+                name: "FK_server_ban_hit_ban_ban_id",
+                table: "server_ban_hit",
+                column: "ban_id",
+                principalTable: "ban",
+                principalColumn: "ban_id",
+                onDelete: ReferentialAction.Cascade);
+
             migrationBuilder.DropForeignKey(
                 name: "FK_server_ban_hit_server_ban_ban_id",
                 table: "server_ban_hit");